Shutdown of the Robert B. Diemer Filtration Plant


SCH Number
Public Agency
Metropolitan Water District of Southern California
Document Title
Shutdown of the Robert B. Diemer Filtration Plant
Document Type
NOE - Notice of Exemption

Document Description
The Metropolitan proposes to shutdown the Robert B. Diemer Filtration Plant (Diemer Plant). Metropolitan proposes to dewater and shutdown the Diemer Plant, the Finished Water Reservoir, and associated raw and treated water pipelines. Metropolitan proposes to install a manually operated slide gate in the Diemer Plant reservoir bypass to the Allen McColloch Pipeline turnout and to remove and dispose of sediment from the filter influent and basin influent channels. During the plant shutdown, Metropolitan also proposes to perform miscellaneous minor equipment upgrades, as well as inspections and maintenance of pipelines and equipment located at the Diemer Plant.

Contact Information
Deirdre West
Metropolitan Water District of Southern California
Lead/Public Agency
P.O. Box 54153
Los Angeles, CA 90054

Phone : (213) 217-6696


Yorba Linda

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301, 15309
Reasons for Exemption
The project consists of the operation, repair, maintenance, or minor alteration of existing public structures, facilities, mechanical equipment, or topographical features, involving no expansion of use beyond that existing at the time of the lead agency's determination. The project also consists of activities limited to inspections, to check for performance of an operation, or quality, health, or safety of a project.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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